About 10 years ago I was chatting with some friends in Australia and they expressed having no knowledge of Sloppy Joes and spray cheese (Easy Cheese et al). I offered to send them some samples. Postal regulations prohibited mailing aerosol products, but undaunted, I packed the Cheese Whiz in two zip-lock bags in case there was an incident at high altitude. The PO clerk asked if there was any hazardous material in the package, and considering that Sloppy Joes may be detrimental to gastro-intestinal well-being, and Cheese Whiz is murder on cholesterol, I replied "Nope".
When the package arrived (unscathed BTW), they expressed delight at the items, but were more en
thralled with the zip-lock bags the cheese was in. Apparently, ZipLoc hadn't captured the Australian market at that time. I told them they'd have to find another source for ZipLoc bags, since that grocery order cost me $38 to ship down there.

Oh - they reciprocated (more like retaliated) by sending me some vegemite. <GACK>